Arylation of Nucleophiles Using Diaryliodonium (III) Salts

Abstract

Diaryliodonium(III) salts (Ar1Ar2I+X−) are hypervalent iodine(III) compounds that function as useful arylation agents forming aryl-carbon and aryl-heteroatom bonds with or without transition metal catalysts. The iodine(III) center of diaryliodonium salts has electrophilic properties, which induces the arylation reactions of nucleophiles. For the cases with Ar1≠Ar2 in diaryliodonium salts, the chemoselectivity of aryl-group transfers depends on the nature of the aryl ligands, including electronic and steric effects. This article describes ligand control strategy leading to unified aryl selectivity and enhanced reactivity for the arylation of various nucleophiles.